The brainpower of some person is typically evaluated by applying several intelligence tests. There upon the psychologist has to interpret the results relative to the outcomes of other test persons. He aims at a fair judgement without overestimating or underestimating the capabilities of the test person. Unfortunately, it turns out that the mean of all measurements of the person generally leads to a biased estimate. Thus we present a method for aggregating different intelligence quotients which leads to an unbiased estimate, the so-called 'Meta-IQ'. Furthermore, we derive simple formulas by taking specific dependence structures of the outcomes into account.